<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">
              {{this.$store.state.city}}
            </div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" v-for="item of hotCities" :key="item.id" @click="handleCityClick(item.name)">
            <div class="button">
              {{item.name}}
            </div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
          <div class="title border-topbottom">{{key}}</div>
          <div class="item-list">
            <ul>
              <li class="item border-bottom" @click="handleCityClick(innerItem.name)" v-for="innerItem of item" :key="innerItem.id">{{innerItem.name}}</li>
            </ul>
          </div>
      </div>
    </div>
  </div>
</template>

<script>
import BScroll from 'better-scroll'
export default {
  name: 'CityList',
  props: {
    cities: Object,
    hotCities: Array,
    letter: ''
  },
  mounted () {
    this.scroll = new BScroll(this.$refs.wrapper)
  },
  watch: {
    letter () {
      if (this.letter) {
        const ele = this.$refs[this.letter][0]
        this.scroll.scrollToElement(ele)
      }
    }
  },
  methods: {
    handleCityClick (city) {
      this.$store.dispatch('changeCity', city)
      this.$router.push('/')
    }
  }
}
</script>

<style scoped lang="stylus">
  .list
    position: absolute
    top: 1.58rem
    right: 0
    bottom: 0
    left: 0
    overflow: hidden
    .title
      line-height: .54rem
      background-color: #eee
      padding-left: .2rem
      color: #666
      font-size: .26rem
    .button-list
      overflow: hidden
      padding: .1rem .6rem .1rem .1rem
      .button-wrapper
        width: 33.33%
        float: left
        .button
          margin: .1rem
          padding: .1rem 0
          text-align: center
          border: .02rem solid #ccc
          border-radius: .06rem
    .item-list
      .item
        line-height: .76rem
        color: #666
        padding-left: .2rem
</style>
